I gotta say that for your needs sewflawless, I highly recommend the
Thule 866 Escape II soft roof bag over the
Thule 630 Ranger soft roof bag. The 866 Escape II connects directly to your Toyota Sienna roof rack factory bars. This is a superb cargo gear/luggage carrier that offers great carrying capacity, is waterproof and quickly removes and folds for easy storage when not in use, unlike hard shell cargo roof boxes. Provides a killer 15 cubic feet of cargo space for lots of luggage and cargo gear. The 630 Ranger is great if you are carrying gear that requires a sturdy base, however luggage and clothing is more suited to the 866, plus you have more carrying capacity (the 630 Ranger is only 12 cubic feet) and the 866 folds up and stores more easily.